Trendnet VoIP Gateway User Manual

TVP-221H User’s Guide 

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Chapter 2 

Installing the TVP-221H 

 

For the TVP-221H to successfully operate in your network, your network must 
meet the following requirements: 

1.  A working 10/100 Base-T Ethernet. The TVP-221H connects to the Internet 

via an Ethernet LAN. 

2.  IP network that supports gateway, and subnet mask. You’ll need a static IP 

address to assign the TVP-221H or a DDNS account for your Dynamic IP. 

Due to the TVP-221H being used in a desktop configuration, ensure that the TVP-
221H is placed in a clean, well-ventilated, and vibration-free environment. 

When the TVP-221H is used, be certain that the unit is placed on a sturdy, flat 
surface, near a grounded power outlet.  At least three inches of clearance must be 
provided on both sides of the TVP-221H for good ventilation. 

The 4 port TVP-221H supports 2 FXO and 2 FXS. Each RJ11 port is for 
connecting to telephony devices.  

The FXO port is designed for connecting to PBXs or local telephone company 
central office switches (CO). 

The FXS port is designed for connecting to analog telephone sets, G3 fax 
machines.  

Warning:  connection of incorrect telephony devices to the ports on the TIM can 
cause permanent damage to the TIM and/or the TVP-221H. 

The RJ45 network port on the rear panel supports 10/100 Mbps half-duplex 
connections to Ethernet. You can use either Category 3 or 5 straight-through UTP 
cable for 10 Mbps connections, but use Category 5 for 100 Mbps connections.  
TVP-224 supports PPPoE and DDNS so it can be connected directly to your Cable 
/ ADSL modem, or under a Router. The first time you connect the TVP-221H for 
configuration, you will need to connect to it under the same LAN segment to set 
the Fixed IP or DHCP, PPPoE clients. To configure the TVP-221H, insert one end 
of the Ethernet cable into the RJ45 port on the rear panel of the TVP-221H and 
other end directly to your PC Terminal. The TVP-221H supports auto MDIX so 

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